<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8"
          ><el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          ></el-col
        >
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"> </el-table-column>
        <el-table-column prop="username" label="姓名" width="180">
        </el-table-column>
        <el-table-column prop="email" label="邮箱" width="180">
        </el-table-column>
        <el-table-column prop="mobile" label="电话" width="180">
        </el-table-column>
        <el-table-column prop="role_name" label="角色" width="180">
        </el-table-column>
        <el-table-column prop="mg_state" label="状态" width="180">
          <template slot-scope="scope">
            <!-- slot-scope="scope" element用法 用slot-scope接收了当前作用域的数据-->
            <!-- {{ scope.row }} -->
            <!-- 通过scope.row拿到当前行的数据  不懂可以将上一行{{ scope.row }}注释解开查看-->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="305px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->

            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                size="mini"
                type="warning"
                icon="el-icon-setting"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
        <!-- layout 表示页面显示哪些组件 total表示后台所有数据条数-->
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      :before-close="handleClose"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      :before-close="handleClose"
      @close="editDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--  底部按钮区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      :before-close="handleClose"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{ this.userInfo.username }}</p>
        <p>当前的角色：{{ this.userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //手机号的校验规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1([38]\d|5[0-35-9]|7[3678])\d{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入正确的手机号码'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前页数
        pagenum: 1,
        //当前页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: { username: '', password: '', email: '', mobile: '' },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在 3 到 10 个字',
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          {
            type: 'email',
            message: '请输入正确的邮箱地址',
            trigger: ['blur', 'change'],
          },
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          {
            validator: checkMobile,
            message: '请输入合法的手机号码',
            trigger: 'blur',
          },
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 修改用户的表单数据
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          {
            type: 'email',
            message: '请输入正确的邮箱地址',
            trigger: ['blur', 'change'],
          },
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          {
            validator: checkMobile,
            message: '请输入合法的手机号码',
            trigger: 'blur',
          },
        ],
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色ID值
      selectedRoleId: '',
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      if (res.meta.status !== 200)
        return this.$message({
          showClose: true,
          message: '获取用户列表失败',
          type: 'error',
        })
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message({
          showClose: true,
          message: '用户更新状态失败！',
          type: 'error',
        })
      }
      this.$message({
        showClose: true,
        message: '用户更新状态成功',
        type: 'success',
      })
    },
    // 是否关闭用户添加的对话框的方法
    handleClose(done) {
      this.$confirm('确认关闭？')
        .then((_) => {
          done()
        })
        .catch((_) => {})
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid)
        // 如果valid为false 则表示请求失败 直接return出去 不添加用户
        if (!valid) return
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)

        if (res.meta.status !== 201) {
          this.$message({
            showClose: true,
            message: '添加用户失败',
            type: 'error',
          })
        }
        this.$message({
          showClose: true,
          message: '添加用户成功',
          type: 'success',
        })
        //隐藏修改的对话框
        this.addDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        this.$message({
          showClose: true,
          message: '查询用户信息失败',
          type: 'error',
        })
      }
      this.editDialogVisible = true
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid)
        // 如果valid为false 则表示请求失败 直接return出去 不修改用户
        if (!valid) return
        //可以发起修改用户的网络请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        )

        if (res.meta.status !== 200) {
          this.$message({
            showClose: true,
            message: '修改用户失败',
            type: 'error',
          })
        }
        //隐藏添加的对话框
        this.editDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
        // 提示数据更新成功
        this.$message({
          showClose: true,
          message: '修改用户成功',
          type: 'success',
        })
      })
    },
    //根据ID删除对应的用户数据
    async removeUserById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)

      //如果用户确认删除，则返回字符串 confirm
      //如果用户取消删除，则返回字符串 cancel
      // console.log(confirmResult)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已撤销 删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        this.$message({
          showClose: true,
          message: '删除用户信息失败',
          type: 'error',
        })
      }
      // 提示数据删除成功
      this.$message({
        showClose: true,
        message: '删除用户信息成功',
        type: 'success',
      })
      //重新获取用户列表数据
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前，先获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message({
          showClose: true,
          message: '获取角色列表失败',
          type: 'error',
        })
      }

      this.rolesList = res.data
      // 展示分配角色对话框
      this.setRoleDialogVisible = true
    },
    //点击确定按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message({
          showClose: true,
          message: '请选择要分配的角色！',
          type: 'error',
        })
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId,
        }
      )
      if (res.meta.status !== 200) {
        return this.$message({
          showClose: true,
          message: '设置角色失败！',
          type: 'error',
        })
      }
      this.$message({
        showClose: true,
        message: '设置角色成功！',
        type: 'success',
      })
      // 刷新用户列表
      this.getUserList()
      // 隐藏分配角色对话框
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userlist = {}
    },
  },
}
</script>

<style lang="less" scoped>
</style>